United States, Illinois, Mason, About 2 mile northeast of Bath, Illinois. Matanzas Prairie Nature Preserve. Illinois River Section of the Illinois and Mississippi River Sand Area Natural Division. Kilbourne Quadrangle.
40.2154 -90.1129
T. 20N, R. 9W, NE1/4 Sect. 4
Growing north of large ditch and along south edge of young mesic sand forest in an old field.